Abstract :
The electricity sector is one of the leading sector in supporting economy and
progress in the national development. Supported by vast ocean, Indonesia has the
opportunity to develop sea water as the largest alternative energy source.
The used method for this research study was the voltaic cell method. Besides
the electrolyte solutions, voltaic cells consist of two part; electrode and electrolyte. The
voltaic cells were one of the electrochemical cells in which the chemical energy from
spontaneous redox reactions converted into electrical energy. The principle of voltaic
cells was producing electric current by transferring electrons from the oxidation
reaction in the anode to the reduction reaction in the cathode.
The power generated by battery electrolyte seawater with variation of
electrode copper (Cu), magnesium (Mg) and aluminum (Al). the power of Mg-Cu
electrode was 0.0512775 Watt, Al-Cu electrode was 0.0030264 Watt and the electrode
Mg-Al was 0.0007182 Watt. In conclusion, the hignest electrode variation was at Mg?Cu as 0.0512775 Watt and the lowest was at Mg-Al as 0.0007182 Watt